SR-1 has standard pointed rasp teeth. These are particularly effective in grinding down rough sole horn but leave a rougher finish than the Knife Tooth SR-2. Best choice for hard, slick sole horn. It as
hoof pick and scraping point for removing dirt and grit from bars,
sole, white line, and wall cracks. 3 different arcs for use on
different shapes of sole. Used in one and two hand grips. Made from high carbon steel for long lasting teeth.

SR-2 is a 'U' shaped rasping tool with curved 'knife teeth' for cleaning bars and sole. These teeth 'shave' rather than scrape. It has hoof pick and scraping point for removing dirt and grit from bars,
sole, white line, and wall cracks. 3 different arcs for use on
different shapes of sole. Applied with with one or two hand grips in
same manner as SR-1. High carbon steel for long lasting teeth. The SR-2-F is the narrower SR-2 with the same shaving teeth. It is the overall easiest to use. Its 7/8" width fits best into the tight curves of sole on smaller hooves. Best choice for smaller hands. Often works best on heavy or rough soles when used after SR-1 rasp tooth.

SR-2 is a 'U' shaped rasping tool with curved 'knife teeth' for
cleaning bars and sole. These teeth 'shave' rather than scrape. It as
hoof pick and scraping point for removing dirt and grit from bars,
sole, white line, and wall cracks. 3 different arcs for use on
different shapes of sole. Applied with with one or two hand grips in
same manner as SR-1. High carbon steel for long
lasting use.
Includes:
> Plastic Handle
> Hoof Pick Point and Scraper.The
SR-2-C is the wider version knife tooth bar rasp. It
removes horn faster than the SR-2-F narrow version or the SR-1 rasp tooth. The SR-2-C's 1" width rapidly cleans soles
and bars. It is ideal for thicker soles and larger hooves, and is less
likely to clog on soft horn. This is the best choice for frequent and professional trimmers.